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Accuracy analysis and application of extrapolation of force-free fields in solar active and quiet regions

Published online by Cambridge University Press:  18 July 2013

Suo Liu ,
Hongqi Zhang ,
Jiangtao Su  and
Mutao Song
Suo Liu
Affiliation:
Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences email: lius@nao.cas.cn
Hongqi Zhang
Affiliation:
Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences email: lius@nao.cas.cn
Jiangtao Su
Affiliation:
Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences email: lius@nao.cas.cn
Mutao Song
Affiliation:
Mountain Observatory, Chinese Academy of Sciences, Nanjing, China
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Abstract

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In this paper, the availability, applicability and deviation of nonlinear force-free (NLFF) fields extrapolated by Approximate Vertical Integration (AVI), Boundary Integral Equation (BIE) and Optimization (Opt.) methods are studied based on the comparison with two semi-analytical fields (Low & Lou 1990). These NLFF extrapolations based on the observational vector magnetograms are used to study the spatial magnetic field in the quiet Sun.

Keywords

Magnetic FieldCoronaField Extrapolation

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